Troy-Bilt Series 959 Operator's Manual

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Operator's Manual

21" Self-Propelled

Mower

Model Series

959

IMPORTANT: READ SAFETY RULES AND INSTRUCTIONS CAREFULLY

Warning: This unit is equipped with an internal combustion engine and should not be used on or near any unimproved forest_

covered, brush-covered or grass-covered land unless the engine's exhaust system is equipped with a spark arrester meeting
applicable local or state laws (if any). If a spark arrester is used, it should be maintained in effective working order by the operator.

In the State of California the above is required by law (Section 4442 of the California Public Resources Code). Other states may have

similar laws. Federal laws apply on federal lands. A spark arrester for the muffler is available through your nearest engine authorized
service dealer or contact the service department, P.O. Box 361131 Cleveland, Ohio 44136-0019.

Troy-Bilt LLC, P.O.BOX361131CLEVELAND,0HI0 44136-0019

PRINTED IN U.S.A. FORM NO. 769-00018

(2/2002)

TABLEOFCONTENTS

Content Page

Important Safe Operation Practices ................................................................................... 3

Slope Gauge ...................................................................................................................... 6

Assembling Your Lawn Mower .......................................................................................... 7

Know Your Lawn Mower .................................................................................................... 8

Operating Your Lawn Mower ............................................................................................. 9

Making Adjustments .......................................................................................................... 10

Maintaining Your Lawn Mower ........................................................................................... 11

Servicing Your Lawn Mower .............................................................................................. 12

Off-Season Storage ........................................................................................................... 14

Troubleshooting ................................................................................................................. 15

Parts List .......................................................................................................................... 16

FINDINGMODELNUMBER

This Operator's Manual is an important part of your new Lawn Mower. It will help you assemble, prepare
and maintain the unit for best performance. Please read and understand what it says.

Before you start assembling your new equipment, please locate the model plate on the
equipment and copy the information from it in the space provided below. This information is very
important if you need help from our Customer Support Department or an authorized dealer.

You can locate the model number by looking down at the rear of the deck. A sample model plate is
explained below. For future reference, please copy the model number and the serial number of the

equipment in the space below.

Copy the model number here:

Copy the serial number here:

ENGINEINFORMATION

The engine manufacturer is responsible for all engine-related issues with regards to performance, power-
rating, specifications, warranty and service. Please refer to the engine manufacturer's Owner's/Operatods

Manual packed separately with your unit for more information.

CALLINGCUSTOMERSUPPORT

If you have difficulty assembling this product or have any questions regarding the controls, operation or
maintenance of this unit, please call the Customer Dealer Referral Line.

Call 1-866-840-6483 or 1-330-558-7220 to reach the Customer Dealer Referral Line. Please

have your unit's model number and serial number ready when you call. See previous section
to locate this information.

SECTION1: IMPORTANTSAFEOPERATIONPRACTICES

WARNING: This symbol points out important safety instructionswhich, ifnot followed, could endanger

the personal safety and/or property of yourself and others. Read and follow all instructions inthis manual
before attempting to operate this machine. Failure to comply with these instructions may result in personal

injury. When you see this symbol--HEED ITS WARNING.

WARNING: The Engine Exhaust from this product contains chemicals known to the State of California

to cause cancer, birth defects or other reproductive harm.

DANGER: This machine was built to be operated according to the rules for safe operation in this manual. As with

any type of power equipment, carelessness or error on the part of the operator can result in serious injury. This
machine is capable of amputating hands and feet and throwing objects. Failure to observe the following safety instruc-
tions could result in serious injuryor death.

GeneralOperation

1. Read this operator's manual carefully in its entirety
before attempting to assemble this machine. Read,

understand, and follow all instructions on the machine
and in the manual(s) before operation. Be completely

familiar with the controls and the proper use of this
machine before operating it. Keep this manual in a safe
place for future and regular reference and for ordering
replacement parts.

2. This machine is a precision piece of power equipment,
not a plaything. Therefore, exercise extreme caution at all
times. Your unit has been designed to perform one job: to
mow grass. Do not use it for any other purpose.

3. Never allow children under 14 years old to operate this
machine. Children 14 years old and over should read and
understand the operation instructions and safety rules in
this manual and should be trained and supervised by a
parent. Only responsible individuals who are familiar with
these rules of safe operation should be allowed to use

this machine.

4. Thoroughly inspect the area where the equipment is to
be used. Remove all stones, sticks, wire, bones, toys and
other foreign objects which could be tripped over or
picked up and thrown by the blade. Thrown objects can
cause serious personal injury. Plan your mowing pattern
to avoid discharge of material toward roads, sidewalks,
bystanders and the like. Also, avoid discharging material
against a wall or obstruction which may cause
discharged material to ricochet back toward the operator.

5. To help avoid blade contact or athrown object injury,stay
in the operator zone behind the handles and keep
children, bystanders, helpers and pets at least 75 feet
from the mower while it is in operation. Stop machine if
anyone enters the area.

6. Always wear safety glasses or safety goggles during
operation and while performing an adjustment or repair to
protect your eyes. Thrown objects which ricochet can
cause serious injury to the eyes.

7. Wear sturdy, rough-soled work shoes and dose-fitting
slacks and shirts. Shirts and pants that cover the arms
and legs and steel-toed shoes are recommended. Never
operate this machine in bare feet, sandals, slippery or
light weight (e.g. canvas) shoes.

8. Do not put hands or feet near rotating parts or under the
cutting deck. Contact with the blade can amputate hands

and feet.

9. A missing or damaged discharge cover can cause blade
contact or thrown object injuries.

10. Many injuries occur as a result of the mower being pulled
over the foot during a fall caused by slipping or tripping.
Do not hold on to the mower if you are failing; release the
handle immediately.

11. Never pub the mower back toward you while you are
walking. If you must back the mower away from a wall or
obstruction first look down and behind to avoid tripping
and then follow these steps:

a. Step back from the mower to fully extend your

arms.

b. Be sure you are web balanced with sure footing.

c. Pull the mower back slowly, no more than half way

toward you.

d. Repeat these steps as needed.

12. Do not operate the mower while under the influence of
alcohol or drugs.

13. Do not engage the self-propelled mechanism on units so
equipped while starting engine.

14. The blade control handle is a safety device. Never
attempt to bypass its operation. Doing so makes the
safety device inoperative and may result in personal
injurythrough contact with the rotating blade. The blade
control handle must operate easily in both directions and
automatically return to the disengaged position when

released.

15. Never operate the mower in wet grass. Always be sure of
your footing. A slip and fall can cause serious personal
injury. If you feel you are losing your footing, release the
blade control handle immediately and the blade will stop
rotating within three seconds.

16. Mow only in daylight or in good artificial light. Walk, never
run.

17. Stop the blade when crossing gravel drives, walks or
roads.

18. If the equipment should start to vibrate abnormally, stop
the engine and check immediately for the cause.
Vibration is generally a warning of trouble.

19. Shut the engine off and wait until the blade comes to a
complete stop before removing the grass catcher or
unclogging the chute. The cutting blade continues to
rotate for a few seconds after the engine is shut off.
Never place any part of the body in the blade area until
you are sure the blade has stopped rotating.

20.Neveroperatemowerwithoutpropertrailshield, 5.
dischargecover,grasscatcher,bladecontrolhandleor
othersafetyprotectivedevicesinplaceandworking. 6.
Neveroperatemowerwithdamagedsafetydevices.
Failuretodoso,canresultinpersonalinjury.

21.Mufflerandenginebecomehotandcancauseaburn.Do
nottouch.

22.Onlyusepartsandaccessoriesmadeforthismachineby

the manufacturer. Failure to do so, can result in personal Service

injury.

23. If situations occur which are not covered in this manual,
use care and good judgment. Contact your dealer for

assistance. Telephone [phone] for the name of
your nearest dealer.

SlopeOperation

Slopes are a major factor related to slip and fall accidents
which can result in severe injury. Operation on slopes
requires extra caution. If you feel uneasy on a slope, do net
mew it. For your safety, use the slope gauge included as part
of this manual to measure slopes before operating this unit on
a sloped or hilly area. If the slope is greater than 15 degrees,

de not mow it.

DO:

1. Mew across the face of slopes] never up and down.
Exercise extreme caution when changing direction on
slopes.

2. Watch for holes, ruts, rocks, hidden objects, or bumps
which can cause you to slip or trip. Tall grass can hide

obstacles.

3. Always be sure of your footing. A slip and fall can cause
serious personal injury. If you feel you are losing your
balance, release the blade control handle immediately,
and the blade will stop rotating within 3 seconds.

D0Not:

f. Do not mow near drop-offs, ditches or embankments,

you could lose your footing or balance.

2. Do not mow slopes greater than 15 degrees as shown on
the slope gauge.

3. De net mow on wet grass. Unstable footing could cause
slipping.

Children

Tragic accidents can occur if the operator is not alert to the
presence of children. Children are often attracted to the
mower and the mowing activity. They do not understand the
dangers. Never assume that children will remain where you

last saw them.

1. Keep children out of the mowing area and under the
watchful care of a responsible adult other than the
operator.

2. Be alert and turn mower off if a child enters the area.

3. Before and while moving backwards, look behind and
down for small children.

4. Use extreme care when approaching blind corners,
doorways, shrubs, trees, or other objects that may
obscure your vision of a child who may run into the

mower.

Keep children away from hot or running engines. They
can suffer burns from a hot muffler.

Never allow children under 14 years old to operate a
power mower. Children 14 years old and over should
read and understand the operation instructions and
safety rules in this manual and should be trained and
supervised by a parent.

Safe Handling OfGasoline:

1. To avoid personal injury or property damage use extreme
care in handling gasoline. Gasoline is extremely

flammable and the vapors are explosive. Serious

personal injury can occur when gasoline is spilled on
yourself or your clothes which can ignite.

2. Wash your skin and change clothes immediately.

3. Use only an approved gasoline container.

4. Never fill containers inside a vehicle or on atruck or
trailer bed with a plastic liner. Always place containers on

the ground away from your vehicle before filling.

5. When practical, remove gas-powered equipment from
the truck or trailer and refuel it on the ground. Ifthis is not
possible, then refuel such equipment on a trailer with a
portable container, rather than from a gasoline dispenser

nozzle.

6. Keep the nozzle in contact with the rim of the fuel tank or
container opening at all times until fueling is complete. Do
not use a nozzle lock-open device.

7. Extinguish all cigarettes, cigars, pipes and other sources
of ignition.

8. Never fuel machine indoors because flammable vapors
will accumulate in the area.

9. Never remove gas cap or add fuel while the engine is hot
or running. Allow engine to cool at least two minutes
before refueling.

10. Neveroverfillfueltank. Fill tank to no more than ½ inch
below bottom of filler neck to provide space for fuel

expansion.

11. Replace gasoline cap and tighten securely.

12. If gasoline is spilled, wipe it off the engine and
equipment. Move unit to another area. Wait 5 minutes
before starting the engine.

13. Never store the machine or fuel container inside where
there is an open flame, spark or pilot light as on a water

heater, space heater, furnace,clothes dryer or other gas
appliances.

14. To reduce fire hazard, keep mower free of grass, leaves,
or other debris build-up. Clean up oil or fuel spillage and
remove any fuel soaked debris.

15. Allow a mower to cool at least 5 minutes before storing.

GeneralService:

1. Never run an engine indoors or in a poorly ventilated
area. Engine exhaust contains carbon monoxide, an
odorless and deadly gas.

2. Before cleaning, repairing, or inspecting, make certain
the blade and all moving parts have stopped. Disconnect
the spark plug wire and ground against the engine to
prevent unintended starting.

3. Checkthebladeandenginemountingboltsatfrequent
intervalsforpropertightness.Also,visuallyinspectblade
fordamage(e.g.,bent,cracked,worn)Replaceblade
withtheodginalequipmentmanufacture's(O.E.M)blade
only,listedinthismanual"Useofpartswhichdonot
meettheoriginalequipmentspecificationsmayleadto
improperperformanceandcompromisesafety!"

4. Mowerbladesaresharpandcancut.Wrapthebladeor
weargloves,anduseextracautionwhenservicingthem.

5. Keepallnuts,bolts,andscrewstighttobesurethe
equipmentisinsafeworkingcondition.

6. Nevertamperwithsafetydevices.Checktheirproper
operationregularly.

7. Afterstrikingaforeignobject,stoptheengine,disconnect
thesparkplugwireandgroundagainsttheengine.
Thoroughlyinspectthemowerforanydamage.Repair
thedamagebeforestartingandoperatingthemower.

8. Neverattempttomakeawheelorcuttingheight
adjustmentwhiletheengineisrunning.

9. Grasscatchercomponents,dischargecover,andtrail
shieldaresubjecttowearanddamagewhichcould
exposemovingpartsorallowobjectstobethrown.For
safetyprotection,frequentlycheckcomponentsand
replaceimmediatelywithoriginalequipment
manufacturer's(O.EM.)partsonly,listedinthismanual
"Useofpartswhichdonotmeettheoriginalequipment
specificationsmayleadtoimproperperformanceand
compromisesafety!"

10.Donotchangetheenginegovernorsettingoroverspeed
theengine.Thegovernorcontrolsthemaximumsafe
operatingspeedoftheengine.

11.Maintainorreplacesafetyandinstructionlabels,as
necessary.

12.Observeproperdisposallawsandregulations.Improper
disposaloffluidsandmaterialscanharmthe

environment.

YourResponsibility

Restrict the use of this power machine to persons who read,

this manual and on the machine.

understand and follow the warnings and instructions in

t d_ETAWAY

%_ i!i_iiii!i!S,.......

USE THIS PAGE AS A GUIDE TO DETERMINE SLOPES WHERE YOU MAY NOT OPERATE SAFELY.

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SIGHT AND HOLD THIS LEVEL WITH A VERTICAL TREE

A POWER POLE

A CORNER OF A BUILDING

15°

_IbWARNING

Do not mow on inclines with a slope in excess of 15 degrees (a rise of approximately 2-1/2 feet every 10 feet). A riding mower
could overturn and cause serious injury. If operating a walk-behind mower on such a slope, it is extremely difficult to maintain
your footing and you could slip, resulting in serious injury.
Operate RIDING mowers up and down slopes, never across the face of slopes.
Operate WALK-BEHIND mowers across the face of slopes, never up and down slopes.

_O

SECTION3: ASSEMBLINGYOURLAWNMOWER

IMPORTANT: This unit is shipped without gasoline or oil
in the engine. Be certain to service engine with gasoline
and oil as instructed in the separate engine manual
before operating your mower.

NOTE: Reference to right or left hand side of the

mower is observed from the operating position.

Assembly

RemovingUnitFromCarton

Remove staples, break glue on top flaps or cut tape
at carton end and peel along top flap to open

carton.
Remove loose parts if included with unit (i.e.,

operator's manual, hardware pack etc.).
Cut corners and lay carton down flat. Remove

packing material.
Roll or slide unit out of carton thoroughly for loose

parts.

DisconnectingSparkPlug

Before setting up your lawn mower, disconnect the

spark plug wire from the spark plug and ground against
the engine. See Figure 1.

Spark Plu!
Wire

Spark

Figure I

SettingUpYourLawnMower

Lift up and pull back on the upper handle to raise
the handle intothe operating position. Make certain
the lower handle is seated securely into the handle
mounting brackets, tighten the wing nuts on each
side of the handle (carriage bolts must be seated
properly into the handle). See Figure 2.

NOTE: Your mower is shipped with the handle in the

higher height position. If you wish to lower the height of
the handle, refer to the Adjustment Section at this time.

Wing N_t

Handle
Bracket

Figure 2

Remove the hairpin clips from the outer hole in the

weld pins on the handle mounting brackets. Using a

pair of pliers, squeeze one leg of the mower handle

against the handle mounting bracket. Insert the

hairpin clip into the inner hole on the weld pin.
Repeat on other side. See Figure 3.
After moving the hairpin clip, insertthe carriage bolt

from hardware pack in the upper hole on the handle

mounting bracket and secure with plastic wing nut

from the hardware pack. Repeat on other side.

_.,_----Carriage Bolt

Lowe
Handle _lnner Hole

J _ _ _ _-Hairpin

BracketHandleMountingf_Cli p

Figure 3

Fasten the cables to the lower handle with the two

cable ties found on the lower handle. Be sure to

insertthe post on the cable ties into the holes
provided on the lower handle. These holes may be

found on either the inside or the outside ofthe

handles. Pull the cable ties tight and trim off the

excess. See Figure 4.

CableTie.

Lowq

Handle

Figure 4

AttachingStarter Rope

The rope guide is attached to the right side of upper
handle. Loosen the wing nut which secures the
rope guide. See Figure 5.

Rope Wing Nut

Rope 7
Guide Lower

Handle

With the spark plug wire disconnected and

grounded, hold the blade control handle against the

upper handle, and pull the starter rope out of the

engine. Release the blade control handle. Slip the
starter rope into the rope guide. Tighten wing nut.

Figure 5

SECTION4: KNOWYOURLAWNMOWER

Read this operator's manual and safety rules before

operating your lawn mower. Compare the illustration in

Figure 6 with your lawn mower to familiarize yourself

with the location of various controls and adjustments.
Save this manual for future reference.

WARNING: The operation of any lawn

mower can result in foreign object being thrown
into the eyes, which can damage your eyes
severely. Always wear safety glasses while
operating the mower, or while performing any
adjustments or repairs on it.

Blade ControlHandle

The blade control handle is located on the upper handle
of the mower. See figure 6. The blade control handle
must be depressed in order operate the unit. Release
the blade control handle to stop the engine and blade.

,_ WARNING: This blade control mechanism isa safety device. Never attempt to bypass its

operations.

Recoil Starter

The recoil starter handle is attached to the upper
handle. See figure 6. Stand behind the unit in the
operating position to start the unit. See Figure 6.

Drive Clutch Control

The drive clutch control housing is located on the upper
handle. Squeeze the drive control to engage the drive
system. Release the clutch control to disengage the
drive system. Release the clutch control to stow down
when approaching an obstacle, making a turn, or
stopping. See Figure 6.

Shift Lever
The shift lever is located on the drive clutch control

housing on the upper handle. See figure 6. This lever is
used to select the forward speed of the mower. When

changing your speed selection, release the drive clutch
control. See Figure 6.

NOTE: Only move the shift lever when the engine is

running. Changing the shift lever setting with the engine
off can cause damage to the mower.

Cutting Height Adjustment Lever
The cutting height adjustment lever is located above

the left rear wheel. To adjust the cutting height, pull the
lever out and away from the mower, then move it
forward or back to the desired cutting height. See
Figure 6.

Engine Controls
See the engine manual for the location and function of

the controls located on the engine.

StoppingEngine

Release blade control handle to stop the engine

and the blade.

Disconnect spark plug wire and ground it to a bolt

on the engine.

Handle

Shift Lever

Drive
Clutch Cutting Height

Control ustment Lever

Recoil
Starter

Figure 6

SECTION5: OPERATINGYOURLAWNMOWER

WARNING: Keep hands and feet away from
chute area on the cutting deck. The operation

of any lawn mower can result in foreign objects
being thrown into the eyes., which can result in
severe eye damage. Always wear safety
glasses or eye shields.

NOTE: For shipping purposes your mower is set with

the wheels in a low cutting height position. For best
results raise the cutting position until it is determined

which height is best for your lawn. See adjustment

section for details.

Gasand0il Fill-Up

Service the engine with gasoline and oil as instructed in
the separate engine manual packed with your mower.

Read instructions carefully.

WARNING: Never fill fuel tank indoor with

engine running or until the engine has been
allowed to cool for at least two minutes after

running.

BeforeStartingYourMower

Attach spark plug wire to spark plug. Make certain
the metal cap on the end of the spark plug wire is
fastened securely over the metal tip on the spark
plug.
Check for proper drive clutch operation using the

NEUTRAL ADJUSTMENT TEST.

NeutralAdjustmentTest

To perform the NEUTRAL ADJUSTMENT TEST
answer the following questions.

With the drive clutch control released, push mower
forward and pull it backward. Does it move freely?
Squeeze the drive clutch control and pull the
mower backward. Do the rear wheels lock (not
turn)?

Is the drive clutch control cable free of kinks or

sharp bends?

If you answered "yes" to all three questions, your
mower passed the test and you can start your mower. If
you answered "no" to any of the three questions, you
need to go through the DRIVE CLUTCH CONTROL

ADJUSTMENT found in the ADJUSTMENTS section.

StartingEngine

Prime engine as instructed in the separate engine
manual.

Your lawn mower is equipped with a constant

speed throttle, which is set at full throttle for best

performance.
Stand behind the unit, squeeze and hold the blade

control handle against the upper handle.

Grasp starter handle and pull rope out slowly until

engine reaches start of compression cycle (rope
will pull slightly harder at this point). Let the rope

rewind slowly. Pull rope with a rapid, continuos, full

arm stroke. Keep a firm grip on starter handle.

Return it slowly to the rope guide.

NOTE: If any problems are encountered, refer to the

TROUBLE SHOO "lING Section of this manual.

StoppingEngine

Release the blade control handle to stop the engine

and blade.

Disconnect the spark plug wire and ground it

against a bolt on the engine.

UsingYourLawnMower

Be sure that lawn is clear of stones, sticks, wire, or
other objects which could damage the lawn mower or

engine. Such objects could be accidently thrown by the
mower in any direction and cause serious personal
injury to the operators and others.

For the best results, do not cut wet grass because it
tends to stick to the underside of the mower, preventing
proper discharge of grass clippings, and could cause
you to slip and fall. New grass, thick grass or wet grass
may require a narrower cut.

For a healthier lawn, never cut off more than one-third
of the total length of the grass. Your lawn should be cut

in the fall as long as there is growth.

_bb WARNING: Ifyou strike a foreign object,stop the engine. Remove wire from the spark

plug, thoroughly inspect the mower for any
damage, and repair the damage before
restarting and operating the mower. Extensive
vibration of the mower during operation is an
indiction of damage. The unit should be
promptly inspected and repaired.

AttachingSideDischargeChute

This mower can side discharge grass clippings. Follow
instructions below to ready this mower for side
discharge operation.

Remove mulching baffle from unit by disconnecting
wing nuts.

Attach side discharge chute to unit and secure with

the three wing nuts. See Figure 7.

Side Discharge

Chute

Figure 7

SECTION6: MAKINGADJUSTMENTS

WARNING: Do not at any time make any
adjustment to lawn mower without first

stopping engine and disconnect spark plug
wire.

HandleHeightAdjustment

Your mower is shipped with the handle in the higher
height position. To lower the handle height, proceed as

follows.

Remove the starter rope from the rope guide.
Remove the upper handle by removing the hand
knobs and carriage bolts. Lay the upper handle out
of the way, being careful not to bend or kink the

cables.
Remove the hairpin clips from the weld pins on the

handle brackets. Press out the legs of the lower
handle. Remove the lower handle from the mower.

Turn the lower handle around so the notch on the
bottom of the lower handle is facing forward as

shown in Figure 8.
Reassemble, placing the bottom holes in the
handle over the weld pins in the handle mounting

bracket.
Place the hairpin clips in the inner holes in the weld

pins and insert the carriage bolts in the upper hole
on the handle mounting bracket and secure with
plastic wing nuts.
Reassemble the upper handle to the lower handle.

Attach the starter rope as instructed in the

assembly section.

Lower Handle

Notch

Figure 8

DriveClutchControlAdjustment

The drive clutch control adjustment wheel is located in
the drive clutch control handle housing and is used to

tighten or loosen the drive belt. You will have to adjust
the drive clutch control if any of the following happens:

The mower does not propel itself with the drive

clutch engaged.

The mower's drive wheels hesitate with the drive

clutch engaged.
To resolve the above problems, rotate the adjustment
wheel with your fingers. Clockwise to tighten the cable
and counter-clockwise to loosen the cable. See Figure

9.

BottomView

® ®

Adjustment Handle

Wheel_

Drive Clutch
Control

Figure 9

10

NOTE: For some people the drive clutch handle may

not be in a comfortable position. You can adjust the
handle out by tightening the adjustment wheel.

Shift LeverCableAdjustment

Periodic adjustment of the three speed shift cable may
be required due to normal wear on the cable.
Adjustment is needed if all three speeds do not work.

The adjustable cable bracket is located on the left side
of the mower, beside the engine. Follow instructions
below to adjust shift lever.

Start Engine and place speed control in the third
speed position. See Figure 10.

BottomView

® ®

Upper"
Handle

Speed Control

Lever

Stop engine and disconnect spark plug wire and

ground it against engine.

Loosen hex nut (A) which secures the adjustable

cable bracket. See Figure 11.

Push back on the adjustable cable bracket and

tighten hex nut (A). See Figure 11.

AdjustableBracket_Cable 1

Hex Nut ..

(A)

Figure 11

Figure 10

SECTION7: MAINTAININGYOURLAWNMOWER

WARNING: Always stop engine and
disconnect spark plug wire before cleaning,

lubricating or doing any kind of service work on
the lawn mower.

NOTE: When tipping the unit or emptying fuel tank

keep the air cleaner side of engine up. Never tip the
mower more than 90 degrees and do not leave the
mower tipped for any length of time. Off can drain into
the upper part of the engine causing a starting problem.

CleaningMower

Clean the underside of the mower deck after each
use to prevent any build-up of grass clippings. If this

debris is allowed to accumulate, it will result in rust
or corrosion.

NOTE: We do not recommend the use of pressure

washers or garden hose to clean your unit. These may
cause damage to electric components, spindles,
pulleys, bearing or the engine. The use of water will
result in shortened life and reduced serviceability.

Disconnect spark plug wire.
Drain the gasoline from the lawn mower, or place a
piece of plastic under the gas cap.

Tilt the mower so that the side with the air cleaner is

facing up. Hold the mower firmly.

Scrape and clean the underside of the deck with a

suitable tool. Do not spray with water.

Put the mower back on its wheels. If you had put
plastic under the gas cap, remove it now.

EngineMaintenance

Refer to the separate engine manual for all engine
maintenance instructions.

Maintain engine oil as instructed in the separate
engine manual packed with your unit. Read and
follow instruction carefully.

Service air cleaner every 25 hours under normal
conditions. Clean every few hours under extremely
dusty conditions. Poor engine performance and
flooding usually indicated the that he air cleaner

should be serviced. To service the air cleaner, refer
to the separate engine manual packed with your

unit.

The spark plug should be cleaned and the gap

reset once a season. Spark plug replacement is

recommended at the start of each mowing season;
check engine manual for correct plug type and gap
specifications.

11

Clean the engine regularly with a cloth or brush.
Keep the cooling system (blower housing area)
clean to permit proper air circulation which is
essential to engine performance and life. Be certain
to remove all grass, dirt and combustible debris

from muffler area.

Lubrication

Blade Control

Lubricate the pivot points on the blade control handle
and the brake cable at least once a season with light oil.
The blade control must operate freely in both directions.
See Figure 12.

Wheels

Lubricate the wheels and bearing, if so equipped, at
least once a season with light oil or engine oil. Also, if

the wheel are removed for any reason, lubricate the
surface of the wheel with light oil. See Figure 12.

Lubricate

Figure 12

SECTION8: SERVICINGYOURLAWNMOWER

_b ARNING: Always stop engine anddisconnect spark plug wire before performing

any repairs or maintenance.

BladeCare

WARNING: Periodically inspect the blade

adapter and pulley for cracks, especially if you
strike a foreign object. Replace when

necessary.

WARNING: When removing the cutting

blade for sharpening or replacement, protect
hands by using heavy gloves or a thick rag to
grasp the cutting blade.

Disconnect spark plug wire from spark plug.
Turn mower on its side making sure air filter and the
carburetor are up.
Remove the bolt and blade bell support which hold
the blade and adapter to the engine crankshaft.
See Figure 13.

Blade
Ada

Blade Bell

x Bolt

Figure 13

Remove blade and adapter from crankshaft.

When sharpening the blade, follow odginal angle of
grind as a guide. It isextremely important that each
cutting edge receives an equal amount of grinding to
prevent an unbalanced blade. An unbalanced blade will
cause excessive vibration when rotating at high
speeds. It may cause damage to the mower, and it
could break causing personal injury.

The blade can be tested by balancing iton a round
shaft screwdriver. Remove metal from the heavy side

until it balances evenly. It is recommended that the
blade always be removed from the adapter for when

testing for balance.
Before reinstalling the blade and the blade adapter to

the unit, lubricate the engine crankshaft and the inner
surface of the blade adapter with light oil.

Be sure to install the blade with the side of the
blade marked "bottom" (or with part number) facing

ground when the mower is in the operating position.

Slide blade adapter onto engine crankshaft.
Place blade on adapter. Be certain the blade is

aligned with and seated onto the blade adapter
flanges.

Place blade bell support on blade. Make sure the
notches on the blade bell support are aligned with

the small holes in the blade.

Replace hex bolt.
Tighten hex bolt to torque: 450 in. Ibs. min., 600 in.
Ibs. max.

NOTE: To ensure safe operation of your unit, the

blade bolt must be checked periodically for correct
torque.

12

DriveBelt RemovalandReplacement

Disconnect the spark plug wire and ground it
against the engine.
Drain the fuel tank or place a piece of plastic
beneath the cap to prevent gasoline leakage.
Place shift lever in the first position and tip the
mower on its side with air filter facing up.

Remove the center bolt which secures the blade to
the crankshaft. Remove the blade, and the blade
adapter, wave washer, and spacer. Refer to Blade

Care section on the previous page.
Move rear height adjuster to the sixth position.
Remove three hex screws holding the baffle to the
deck and pivot baffle towards rear of the mower.
See Figure 14.

Baffle

Figure 14

Remove the hex bolt from the rear of unit holding
the transmission to the mower housing. See Figure

15.

Cutting Height

Adjustment

Hex Bolt

Slide the belt out from between the belt keeper
bracket and the idler pulley. See Figure 16.

Transmission

Pulle_

Belt_

Bracket

Bolt
Locknut

Transmission

Bracket

Figure 16

Squeeze the belt together and push belt forward.

Press the control arm inward towards the deck and
remove the three speed cable from the slot. See

Figure 17.
Pivot the controlarm down away from the pulley

and belt.

Lift off the lower pulley assembly and remove the

old belt from around the crankshaft. See Figure 17.

Three-Speed
Cable Slot Belt

Control
Arm

Figure 15

Tilt the transmission forward and loosen the idler
pulley bolt and lock nut half a turn using two 7/16"

wrenches.
Using a pair of pliers, pull back and rotate belt

keeper bracket from the slot on idler pulley.

Lower
Pulley I. O O

Figure 17

13

Placethenewbeltoverthetransmissionpulley.
Startthebeltinpulleygrooveandrotatepulleyuntil
beltisseatedintransmissionpulley.
Placebeltbetweenidlerpulleyandthebeltkeeper

bracket.
Usingpliers,rotatethebeltkeeperbracketsothatit

snapsintoslotontheidlerbracket.
Tightentheidlerpulleyboltandlocknut1/2turn
usingtwo7/16"wrenches.
Placebeltbetweenthetwopulleyhalvesonthe

crankshaft.Makesuretoroutethebeltinsidethe
beltguardpin.SeeFigure18.

O00erPu,,eyJ/

Belt

\X_>_--_-'_,_ J'_"-Lower Pulley

Belt alf

Guard PinF __L_ -"

Figure 18

IMPORTANT: When replacing the belt, do not
disassemble the lower pulley assembly.

Pinch belt together so that it isnot in the pulley
groove, and the lower pulley can be pushed

towards the engine. See Figure 19.

Low_ Belt
Half

Pivot the control arm back to its original position

and reinstall the three-speed cable into the slot.

See Figure 20.
Check and make sure the belt is routed inside the

pulley halves and the belt guard pin.

Three-Speed
Cable Slot

Control

Arm

Figure 20

Reinstall the bolt securing transmission to rear

mower housing.
Pivot the baffle back to its original position and

secure with three hex screws earlier removed. You
wilt need a 3/8" socket for those screws.

Lightly lubricate the inside of the blade adapter and
reinstall spacer, wave washer, blade adapter

assembly and the blade in the correct order.

Tighten the hex bolt to secure the blade. Follow
recommended torque which is 450-600 in. Ibs.

Belt
Guard Pin

Figure 19

SECTION9: OFFSEASONSTORAGE

The following steps should be taken to prepare your
lawn mower for storage.

Clean and lubricate the mower thoroughly as
described in the lubrication instructions.

NOTE: We do not recommend the use of pressure

washers or garden hose to clean your unit. They may
cause damage to electric components, spindles,
pulleys, bearings or the engine. The use of water will
result in shortened life and reduce serviceability.

Refer to engine manual for correct engine storage
instructions

Coat mower's cutting blade with chassis grease to
prevent rusting.
Store mower in a dry, clean area. Do not store next

to corrosive materials, such as fertilizer.

NOTE: When storing any type of power equipment in

a poorly ventilated or metal storage shed, care should
be taken to rust-proof the equipment. Using a light oil or
silicone, coat the equipment, especially cables and all
moving parts.

14

SECTION10: TROUBLE-SHOOTINGGUIDE

Problem Cause

Engine fails to start

Engine runs erratic

1. Blade control handle disengaged.

2. Spark plug wire disconnected.

3. Fuel tank empty or stale fuel.

4. Blocked fuel line.

5. Faulty spark plug.

6. Engine flooded

1. Spark plug wire loose.

2. Blocked fuel line or stale fuel.

3. Vent in gas plugged.

4. Water or dirt in fuel system.

5. Dirty air cleaner.

6. Carburetor out of adjustment.

1. Engine oil level low.

2. Air flow restricted.

3. Carburetor not adjusted properly.

1. Spark plug fouled, faulty or gap too
wide.

Carburetor improperly adjusted.
Dirty air cleaner.

Cutting blade loose or unbalanced.

Engine overheats

Idles poorly

2. 2.

3. 3.

Excessive vibration 1. 1.

2. Bent cutting blade. 2.

Mowerwilt not mulch gras,, 1. Wet grass. 1.

2. Excessively high grass. 2.

3. Dull blade. 3.

Uneven cut 1. Wheels not positioned correctly. 1.

2. Dull blade. 2.

Remedy

1. Engage blade control handle.

2. Connect wire to spark plug.

3. Fill tank with clean, fresh gasoline.

4. Clean fuel line.

5. Clean, adjust gap, or replace.

6. Wait a few minutes to restart, but do not
prime.

1. Connect and tighten spark plug wire.

2. Clean fuel line; fill tank with clean, fresh
gasoline

3. Clear vent.

4. Drain fuel tank. Refill with fresh fuel.

5. Clean air cleaner.

6. Adjust carburetor.

1. Fill crankcase with proper oil.

2. Remove blower housing and clean.

3. Adjust carburetor.

1. Reset gap to.030" or replace spark
plug.
Adjust carburetor.

Clean air cleaner.
Tighten blade and adapter. Balance

blade.
Replace blade.

Do not mow when grass is wet; wait
until later to cut.

Mow once at a high cutting height, then
mow again at desired height or make a
narrower cutting path.
Sharpen or replace blade.

Place all four wheels in same height
position.

Sharpen or replace blade.

Refer to separate engine manual packed with your mower for more engine related information.
NOTE: For repairs beyond the minor adjustments listed above, contact your nearest authorized service dealer.

15

SECTION11:ILLUSTRATEDPARTSLIST959

27

\

17

48

57

57

92

16

Model959

Ref.

No.

1,
2,
3,

4,

5,
6,
7,
8,
9,

10,
11,

12,
13,
14,
15,
16,
17,
18,
19,

20,
21,

27,
28,

30,
31,
32,
33,
34,
35,
36,
37,
38,

39,
40,
41,
42,
43,

44,
45,

46,
47,
48,
49,

50,

51,

Part No.

647-0004
731-0904A
16864
731-0620
713-0397
732-0627
731-0924
731-0905A
710-1667A
731-0906
746-0711A
712-0324
746-0883
710-1270

Part Description

Control Handle
Upper Control Handle

3 Spd, Rack Cable Bracket
Control Lever

Gear Insert
Shift Lever Spring

3 Speed Shift Lever
Lower Control Housing
C Sunk Tap Screw #10 x.75 Lg
Cable Mounting Cap

Drive Cable 51,0
Top Lock Nut 1/4-20

Control Housing
Oval C-Sunk Screw

746-1131 Control Cable 46"
749-0439D Upper Handle

720-0241 Wing Nut
736-0451
710-1174

726-0240
749-0907B
731-1901
732-0842
731-1832
731-1833
782-0078B
712-0397
710-0703
746-0939
782W574A
736-0270
712-3006
710-0167
712-0138
782W575A
736-0329
756-0625
738-0924
714-0104
736-0286
782-0565
734-2044
712-0414
16855
10622B

Saddle Washer ,320 ID x .830 OD
Carriage Bolt 5/16-18 x 2,0

Cable Tie
Lower Handle
Trail Shield
Trail Shield Wire

Side Discharge Chute
Mulch Cover

Deck 21"
Wing Nut

Carriage Bolt 1/4-20 x .75
3 Speed Cable
Cable Adjustment Bracket

Bell Washer ,265 ID x ,75 OD
Hex Nut 1/4-20

Carriage Screw 1/4-20 x .50
Hex Nut 1/4-28

Cable Mounting Bracket
Lock Washer 1/4

Roller Cable
Shoulder Screw ,375 ID x 1/4-14
Cotter Pin
Bowed Washer

Single Lever Control Arm
Wheel 9 x 2

Top Lock Tab Weld Nut 1/4-20
Ratchet Pawl Plate

Plastic Spring Ratchet

Ref.

No.

52.

53.

54.

55.

56.

57.

58.

59.

60.

61.

62.

63.

64.

65.

66.

67.

68.

69.

70.

71.

72.

73.

74.

75.

76.

77.

78.

79.

80.

81.

82.

83.

84.

85.

86.

87.

88.

89.

90.

91.

92.

Part No.

748-0381
748-0188B
738-0137A
748-0318
736-0270
710-0751
731-0981A
738-0102
736-0504
734-2004A
736-0105
710-1348
710-0896
710-0654A
611-0064
736-0204
710-0703
710-1242
741-0492A
710-1241
731-1836
754-0460
656-0613
750-1071
750-1070
782-7597
710-0654A
782-7596
732-0807
711-1114
736-0526
731-1828
710-0653
753-0609
742-0741
736-0524A
710-1257
720-0294
682-3053
682-3052
710-1205
720-0279
710-0969
CC-190-092
737-0476

Part Description

Pawl RH

Pawl LH
Shld Screw ,340 ID x .285 OD
Wheel Rachet

Bell Washer ,265 ID x .75 OD

Hex Cap Screw 1/4-20 x ,620

Hubcap
Shoulder Screw ,498 x 1.445

Wave Washer .510 ID x .750 OD
Wheel 8 x 2

Spring Washer .401 ID x ,870 OD
Screw 1/4-14 x ,500

Screw 1/4-14 x ,625

Hex Washer Screw 3/8-16 x 1,0

Front Axle Assembly

Flat Washer ,344 ID x .62 OD
Carriage Screw 1/4-20 x.75

Torx Screw

Block Bushing

Hex Washer Screw

Front Axle Cover

Belt 3/8 x 39.24

Pulley Assembly
Sleeve Spacer .88 ID x 1.13 OD
Sleeve Spacer ,88 ID x 1.00 OD

Pivot Bracket
Screw 3/8-18 x 1,0
Control Arm

Torsion Spring

Pivot Shaft
Wave Washer 1,38 ID x ,88 OD

Baffle
Screw 1/4-20 x 3.75

Blade Adapter Kit
21" Mulching Blade

Blade Bell Support

Hex Bolt 3/8-24 x 2,5
Grip

Handle Brkt, Ass'y LH.

Handle Brkt, Ass'y R.H.

Eyebolt 1/4-20

Knob

Hi-Low Scr. #12
Optional Grass Bag

Bottle of Oil

17

Model959

25

22

28

\

17

16

15

2

4

_0

I

2O

IMPORTANT: For a proper working
machine, use Factory Approved Parts.

V-BELTS are specially designed to

engage and disengage safely. A substitute
(non OEM) V-belt can be dangerous by
not disengaging completely.

3

31

18

Model959

Ref.

Part No.

No.

1, 720-0223
2, 732-0803A
3, 738-0529

4, 710-0751

5, 736-0270
6, 748-0318
7, 736-0369
8, 682-0531
9, 750-0515

10, 741-0978
11, 750-1056
12, 710-0653
13, 682-7528
14, 741-0324
15, 682-7526
16, 618-0263A
17, 710-0604A
18, 713-0453

19, 638-0012
20, 741-0522
21, 732-0832
22, 750-0151
23, 710-1315
24, 711-0835
25, 750-0807
26, 782-0568
27, 710-1652
28, 714-0474
29, 712-3025

30, 736-0425

31, 756-0656

32, 736-3084

Part Description

Grip
Spring Lever
Shoulder Nut ,825 x ,165 Lg.
Cap Screw 1/4-20 x .620

Bell Washer ,285 ID x ,75 OD
Wheel Rachet
Flat Washer ,508 ID x 1,00D

Pivot Arm Assembly
Spacer .510 ID x .70 OD
Sleeve Bearing .504 ID x .830 OD

Shoulder
Tap Screw 1/4-20 x ,375

Chain Cover Assembly
Flange Bearing ,506 ID x .590 Lg
Transmission Axle Assembly
Transmission Assembly

Hex Screw 5/16-18
Chain

Rear Axle Assembly
Flange Bearing ,506 ID x .715 Lg
Torsion Spring
Spacer ,550 ID x .750 OD

Screw 3/8-16 x ,25
Clevis Pin .50 Dia x 4,82 Lg.

Spacer ,385 ID x .624 OD
Hgt Adjustment Spring Bracket

Screw 1/4-14 x ,825
Cotter Pin
Hex Jam Nut 5/16-24
Bell Washer .325 ID x ,930 OD

Pulley
Flat Washer ,510 ID x 1.120 OD

Ref.

No.

33.

34.

35.

36.

37.

38.

39.

40.

41.

42.

43.

44.

45.

46.

47.

48.

49.

50.

51.

52.

53.

54.

55.

56.

57.

58.

59.

60.

61.

62.

63.

Part No.

712-0896
782-7598
741-0600
732-0849A
750-1050
682-0027A
710-0299
741-0682A
736-0570
721-0329
721-0325
618-0253
782-7601A
741-0690
736-0616
782-7595
741-0324
711-1168
717-1469
741-0674
717-1487
736-0314
736-0569
618-0252
710-0642
611-0066
664-0121
747-0940A
747-0939
747-0937
631-0071

Part Description

Hex Jam Nut 1/4-28
Belt Keeper

Bearing
Extension Spring
Flange Spacer
Idler Bracket Assembly
Hex Cap Screw 1/4-28 x 1,0
Bearing Sleeve

Flat Washer ,885 ID x 1.45 OD

Oil Seal

Plug
Upper Housing Assembly

Cable Bracket

Bearing

Thrust Washer ,504 ID x ,70 OD

Pivot Bracket
Flange Bearing

Output Shaft 6T
Gear 34T

Bearing

Pinion Shaft 10T
Thrust Washer 3/8 x ,70
Thrust Washer ,388 x ,625

Lower Housing Assembly

Hex Screw 1/2-20 x .75
Shaft Assembly

Grassbag
Support Rod w/Rope Guide

Pivot Rod
Grassbag Frame

Grassbag Cover

19

MANUFACTURER'S LIMITED WARRANTY FOR:

I I I W _lllmlF IIMIImllMIImlr I

The limited warranty set forth below is given by Troy-Bilt LLC
with respect to new merchandise purchased and used in the

United States, its possessions and territories.

Troy-Bilt LLC warrants this product against defects for a
period of two (2) years commencing on the date of original
purchase and will, at its option, repair or replace, free of
charge, any part found to be defective in materials or
workmanship. This limited warranty shall only apply if this
product has been operated and maintained in accordance
with the Operator's Manual furnished with the product, and
has not been subject to misuse, abuse, commercial use,
neglect, accident, improper maintenance, alteration,
vandalism, theft, fire, water, or damage because of other peril
or natural disaster. Damage resulting from the installation or
use of any accessory or attachment not approved by Troy-Bilt

LLC for use with the product(s) covered by this manual will

void your warranty as to any resulting damage.

Normal wear parts or components thereof are subject to
separate terms as follows: All normal wear parts or
component failures will be covered on the product for a period
of 90 days regardless of cause. After 90 days, but within the
two year period, normal wear part failures will be covered
ONLY IF caused by defects in materials or workmanship of
OTHER component parts. Normal wear parts and
components include, but are not limited to: batteries, belts,
blades, blade adapters, grass bags, rider deck wheels, seats,
snow thrower skid shoes, shave plates, auger spiral rubber,

and tires.

HOW TO OBTAIN SERVICE: Warranty service is available,
WITH PROOF OF PURCHASE, through your local authorized
service dealer. To locate the dealer in your area, check your
Yellow Pages, or contact Troy-Bilt LLC at P.O. Box 361131,

Cleveland, Ohio 44136-0019, or call 1-866-840-6483 or 1-
330-558-7220, or log on to our Web site at www.troybilt.cem.

This limited warranty does not provide coverage in the
following cases:

a. The engine or component parts thereof. These items

carry a separate manufacturer's warranty. Refer to
applicable manufacturer's warranty for terms and

conditions.

b. Log splitter pumps, valves, and cylinders have a sepa

rate one year warranty.

c. Routine maintenance items such as lubricants, filters,

blade sharpening, tune-ups, brake adjustments, clutch
adjustments, deck adjustments, and normal

deterioration of the exterior finish due to use or
exposure.

d. Troy-Bilt LLC does not extend any warranty for

products sold or exported outside of the United States,
its possessions and territories, except those sold
through Troy-Bilt LLC's authorized channels of export

distribution.

e. Parts that are not genuine Troy-Bilt parts are not

covered by this warranty.

f. Service completed by someone other than an

authorized service dealer is not covered by this
warranty.

g. Transportation charges and service calls are not

covered.

No implied warranty, including any implied warranty of
merchantability of fitness for a particular purpose,

applies after the applicable period of express written
warranty above as to the parts as identified. No other
express warranty, whether written or oral, except as
mentioned above, given by any person or entity,
including a dealer or retailer, with respect to any product,
shall bind Troy-Bilt LLC. During the period of the
warranty, the exclusive remedy is repair or replacement

of the product as set forth above.
The provisions as set forth in this warranty provide the

sole and exclusive remedy arising from the sale. Troy-Bilt
LLC shall not be liable for incidental or consequential

loss or damage including, without limitation, expenses
incurred for substitute or replacement lawn care services
or for rental expenses to temporarily replace a warranted
product.

Some states do not allow the exclusion or limitation of
incidental or consequential damages, or limitations on how

long an implied warranty lasts, so the above exclusions or
limitations may not apply to you.

In no event shall recovery of any kind be greater than the
amount of the purchase price of the product sold. Alteration

of safety features of the product shall void this warranty.
You assume the risk and liability for loss, damage, or injury to
you and your property and/or to others and their property
arising out of the misuse or inability to use the product.

This limited warranty shall not extend to anyone other than the
original purchaser or to the person for whom it was purchased
as a gift.

HOW STATE LAW RELATES TO THIS WARRANTY: This
limited warranty gives you specific legal rights, and you may

also have other rights which vary from state to state.

Tr0y-Bilt LLC, P.O.BOX361131CLEVELAND,0HI0 44136-0019; Phone: [phone]